Extranodal NK-T-cell lymphoma, nasal type in granulomatosis with polyangiitis. A case report
Main Article Content
Keywords
Extranodal NK-T-cell lymphoma, Granulomatosis with polyangiitis
Abstract
Background: Granulomatosis with polyangiitis (GP) is a systemic necrotizing vasculitis with multi-organ involvement that primarily affects the respiratory tract and the kidneys. Fever in these patients is an indicator of activity; however, if it arises in isolation, the physician should exclude other causes.
Clinical case: Male patient admitted due to an unexplained fever and weight loss; it was diagnosed GP by a history of pauci-immune glomerulonephritis, fixed pulmonary nodules and chronic sinusitis of four years of evolution; however, the fever persisted despite treatment and in the absence of infection. It was performed an oropharynx lesion biopsy and the diagnosis was extranodal NK-T-cell lymphoma, nasal type, and positive for CD56 and granzyme.
Conclusion: Extranodal NK-T-cell lymphoma, nasal type is a rare entity, of poor prognosis, that should be considered as a diagnosis in patients with GP unresponsive to steroid. That is the reason why biopsy of the lesion and immunohistochemistry are required.
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